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574-576 40Th Ave

Outer Richmond, SF 94121 1505041 2 units · 2 fl · 1965

This building has a higher-than-average number of open problems nearby. Few open issues; problems get fixed quickly. A reasonable bet for a smooth tenancy.

NOVs (7y) vs. neighborhood
Compared to a typical building in Outer Richmond
At or below average
avg 0.7
0
FewerMore

This building has 0 novs (7y), at or below the Outer Richmond average of 0.7.

Rent & eviction protection

Is 574-576 40Th Ave rent-controlled?

San Francisco's Rent Ordinance caps rent increases and provides eviction protection for most residential units built before 1979 with 2+ units. Here's how this building scores.

Built before 1979
Built 1965
2 or more units
2 units
Property type
Multi-Family Residential
Zoning
RH2
Likely rent-controlled. Building age and unit count suggest this property falls under San Francisco's Rent Ordinance.

Based on SF Assessor records. Not legal advice — confirm with the SF Rent Board.

Building characteristics
Units2
Floors2
Year built1965
Total area3,752 sq ft
Property typeMulti-Family Residential
Tax statusHome Owners
Blocklot1505041
Ownership

Registered owner per SF Assessor-Recorder (secured roll).

Owner name
Lok Family Trust
Mailing address
Kan Lun & Lorna Q Lok, Trus 576 40Th Ave San Francisco CA 94121
Last sale
000000

Landlord portfolio

Other SF properties this owner holds, with risk grades for each.

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Multiple entrances & addresses

Included addresses

All street addresses sharing this blocklot that are covered by this report.

576 40th Ave, San Francisco, CA 94121
574 40th Ave, San Francisco, CA 94121
Augrented Insights
Initial analysis

The two-unit residential building at 574-576 40th Avenue in San Francisco's Outer Richmond neighborhood, owned by the Lok Family Trust, has a notable history of unauthorized unit modifications and subsequent remedial actions. Built in 1965, this two-story flats and duplex structure has experienced two significant illegal unit conversion incidents: in 2002, there were reports of unauthorized room construction on the ground level (referred to as unit 574A) with an alleged improper occupancy change from R-1 to R-3, which was investigated and resolved by August 2002 through a permitted remodel project that included the removal of an illegal kitchen and conversion to laundry facilities. A decade later, in 2008, there was another complaint regarding an illegal unit conversion, indicating a pattern of unauthorized modifications, though this complaint was resolved by July 2009.

More recently, the property has experienced infrastructure issues typical of urban environments, with two sidewalk-related complaints recorded on March 15, 2023, though both were resolved quickly with no significant findings upon inspection. These cases involved a curb or ramp defect and a collapsed sidewalk, both of which were closed within a week of reporting. An unrelated incident involving an abandoned motorcycle was reported in June 2018 but was resolved promptly when the vehicle was no longer present at the inspection time. The building's documented history suggests a recurring issue with unauthorized modifications over time, though the most recent complaints relate to external infrastructure rather than the building itself.

AI-generated · may contain errors · check the source data tables below

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Risk rating

How 574-576 40Th Ave's risk score is calculated

We trained a model on 7 years of SF DBI inspection data — notice of violation filings, complaint history, and owner track records. It estimates the probability that DBI inspectors will issue a Notice of Violation at this address in the next 12 months. Lower % = safer.

What the score means for you

Grade A–B — Low risk

DBI rarely finds violations here. Strong maintenance history and a clean complaint record.

Grade C — Moderate risk

Some past violations or complaints on record. Worth asking the landlord about any open issues before signing.

Grade D–F — High risk

Elevated violation and complaint history. DBI has found issues here before and is statistically likely to again.

Neighborhood percentile
91th percentile

Out of 1040 buildings in this neighborhood, 94 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
92%
No DBI
violation
8%
DBI violation
likely
Model explanation

What's driving this score

The three data points that most influenced this building's risk rating — ranked by the weight the model placed on each one.

Neighborhood location

Precise location is a proxy for neighborhood-level risk — some SF blocks have systematically higher DBI activity.

Construction spend, owner's portfolio

Estimated permit value across all of this owner's buildings.

Estimated permit spend (past 7 years)

Dollar value of permits pulled at this address — large recent spend can signal deferred-maintenance catch-up.

12-Month severity forecast
No violation 80.5%
Moderate concern 11.3%
Severe concern 8.2%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

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The story over time

574-576 40Th Ave event timeline

Violations, complaints, fire incidents, permits, and buyouts — most recent records in order.

2023
311 Request Mar 16
Curb or curb ramp defect
Curb or Curb Ramp Defect
311 RequestMar 16
Sidewalk defect

See all 2 events

Full history back to 2023 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 574-576 40Th Ave apartments

13 SF public datasets for this parcel — permits, violations, complaints, fire records, 311 calls, planning records, and buyouts.

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Cancel anytime · Data sourced from SF Open Data, DBI, SFFD, SF Rent Board & Planning

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